DataView.prototype.setBigUint64()

The setBigUint64() method stores an unsigned 64-bit integer (unsigned long long) value at the specified byte offset from the start of the DataView.

dataview.setBigUint64(byteOffset, value [, littleEndian])

byteOffset

The offset, in bytes, from the start of the view to store the data from.

value

The value to set as a BigInt. The highest possible value that fits in an unsigned 64-bit integer is 2n ** 64n - 1n (18446744073709551615n). Upon overflow, it will be zero (0n).

littleEndian

Optional Indicates whether the 64-bit int is stored in little- or big-endian format. If false or undefined, a big-endian value is written.

undefined.

RangeError

Thrown if the byteOffset is set such that it would store beyond the end of the view.

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.setBigUint64(0, 3n);
dataview.getBigUint64(0); // 3n

• DataView
• ArrayBuffer
• BigInt